Pull rod linking structure of vacuum circuit breaker

Abstract

The utility model discloses a vacuum circuit breaker pull rod linking structure, which relates to the circuit breaker pull rod technology field, and comprises a main body mechanism, a lower rod mechanism and other parts, the main body mechanism comprises a housing, the upper port of the housing is provided with a sealing cover, the housing is internally provided with a guide head below the sealing cover, and the lower end of the guide head is provided with a pull rod. The upper end of the guide head penetrates through the sealing cover and is provided with a fixing groove, the connector and the guide head in the main body mechanism of the device are connected by clamping the clamping pieces on the connector into the two clamping grooves in the guide head, the clamping principle is adopted for fixing, operation is easy, disassembly by workers is convenient, and the working efficiency is improved. Meanwhile, two clamping pieces are installed on the device and cannot be lost, a rotary knob of the lower rod mechanism of the device can drive an auxiliary rod to move through an assembly, so that the length of the whole lower rod mechanism is adjusted, the length of the lower rod mechanism can be adjusted, the lower rod mechanism can adapt to various working environments, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker pull rods, in particular to a pull rod linking structure of a vacuum circuit breaker. Background Art

[0002] In medium-voltage or high-voltage circuit breakers, the moving contact and the stationary contact are closed and opened in a vacuum environment to prevent arcing. In order to transmit the movement of the operating mechanism to the moving contact and to achieve insulation between the moving contact and the operating mechanism, an insulating pull rod connecting structure, also known as an insulating pull rod structure, is connected between the end of the moving contact and the operating mechanism.

[0003] For example, the patent website discloses an insulating pull rod of a vacuum circuit breaker (publication number: CN204577334U). The connecting head and the guide head of this device are connected by a pin shaft. The pin shaft needs to be removed during disassembly. However, the pin shaft is small and easy to lose. If lost, the two cannot be fixed together. Therefore, those skilled in the art have proposed a pull rod connection structure for a vacuum circuit breaker. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present invention provides a pull rod link structure for a vacuum circuit breaker. The device adopts a snap-fit ​​principle to fix the connecting head and the guide head, thereby solving the problem of easy loss of the pin in the above-mentioned background.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A pull rod connection structure of a vacuum circuit breaker, comprising:

[0006] The main body mechanism is the main body of the device;

[0007] The main body mechanism includes a shell, an upper port of the shell is provided with a cover, a guide head is provided inside the shell below the cover, the upper end of the guide head passes through the cover and is provided with a fixing slot, two card slots communicating with the fixing slot are correspondingly provided on the side of the guide head above the cover, a connector is provided inside the fixing slot, a cavity is provided inside the connector between the two card slots, two limit plates are correspondingly provided inside the cavity, a second spring is provided inside the cavity between the two limit plates, and a card member extending into the adjacent card slot is installed at the center of the side of each second spring;

[0008] The lower rod mechanism is used to be connected to the crank arm of the vacuum circuit breaker and can be extended and retracted.

[0009] As a further technical solution of the present invention, a bushing is provided inside the shell below the cover, and a first spring is provided inside the shell below the guide head.

[0010] As a further technical solution of the present invention, the lower rod mechanism includes a lower rod installed at the center of the lower surface of the shell, and a storage groove is provided at the lower end of the lower rod.

[0011] As a further technical solution of the present invention, a secondary rod is slidably arranged in the receiving groove, a threaded hole is opened at the upper end of the secondary rod, and a screw is arranged in the threaded hole.

[0012] As a further technical solution of the present invention, an empty slot is opened inside the lower rod just above the receiving slot, the upper end of the screw extends into the empty slot and is installed with a first bevel tooth, a second bevel tooth meshing with the first bevel tooth is rotatably installed on the inner wall of the empty slot, and the end of the second bevel tooth extends to the outside of the lower rod and is installed with a knob. Beneficial effects

[0013] The utility model provides a pull rod connection structure for a vacuum circuit breaker. Compared with the prior art, it has the following beneficial effects:

[0014] 1. A pull rod link structure for a vacuum circuit breaker. The connecting head and the guide head in the main body of the device are connected by using a clamp on the connecting head to fit into two slots on the guide head. The clamping principle is used for fixation, which is simple to operate and convenient for staff to disassemble. At the same time, the two clamps are installed on the device and will not be lost.

[0015] 2. A pull rod link structure for a vacuum circuit breaker. The rotating knob of the lower rod mechanism of the device can drive the sub-rod to move through the assembly, thereby adjusting the length of the entire lower rod mechanism. The length of the lower rod mechanism can be adjusted, so that it can adapt to various working environments, increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a pull rod connection structure of a vacuum circuit breaker;

[0017] Figure 2 A cross-sectional view of a pull rod connection structure of a vacuum circuit breaker;

[0018] Figure 3 This is a partial disassembly diagram of the pull rod connection structure of a vacuum circuit breaker;

[0019] Figure 4 for Figure 2 Enlarged view of part A;

[0020] Figure 5 for Figure 2 Enlarged view of part B.

[0021] In the figure: 1. Shell; 2. Bushing; 3. Guide head; 4. Cover; 5. First spring; 6. Connector; 7. Fixing groove; 8. Clamping groove; 9. Cavity; 10. Limiting plate; 11. Second spring; 12. Clamping piece; 13. Lower rod; 14. Receiving groove; 15. Auxiliary rod; 16. Threaded hole; 17. Screw; 18. Empty groove; 19. First bevel gear; 20. Second bevel gear; 21. Knob. DETAILED DESCRIPTION

[0022] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0025] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0026] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0027] For descriptive purposes, this disclosure may use spatially relative terms such as "below," "beneath," "beneath," "below," "above," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another component(s) as illustrated in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be oriented "above" the other component or feature. Thus, the exemplary term "below" can encompass both "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and, as such, the spatially relative descriptors used herein interpreted accordingly.

[0028] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "a (kind, one)" and "the (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the description indicates the presence of the stated features, wholes, steps, operations, parts, components and / or their groups, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, parts, components and / or their groups. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as terms of degree. As such, they are used to explain the inherent deviations of measured values, calculated values ​​and / or provided values ​​that will be recognized by those of ordinary skill in the art.

[0029] Figure 1 This is a structural diagram of a pull rod connection structure of a vacuum circuit breaker;

[0030] Figure 2 A cross-sectional view of a pull rod connection structure of a vacuum circuit breaker;

[0031] Figure 3This is a partial disassembly diagram of the pull rod connection structure of a vacuum circuit breaker;

[0032] Figure 4 for Figure 2 Enlarged view of part A;

[0033] Figure 5 for Figure 2 Enlarged view of part B;

[0034] like Figure 1-4 As shown, a pull rod connection structure of a vacuum circuit breaker disclosed in the present invention may include: a main body mechanism and a lower rod mechanism and other components;

[0035] like Figure 1-4 As shown, the active mechanism includes a housing 1, a bushing 2, a guide head 3, a cover 4, a first spring 5, a connector 6, a fixing slot 7, a clamping slot 8, a cavity 9, a limiting plate 10, a second spring 11, and a clamping member 12;

[0036] The bushing 2 is arranged on the inner wall of the shell 1, the cover 4 is arranged at the port of the shell 1, the guide head 3 is arranged in the shell 1 and is below the cover 4, the first spring 5 is arranged in the interior of the shell 1 and is below the guide head 3, the fixing groove 7 is opened at the upper end of the guide head 3 passing through the cover 4, the connecting head 6 is arranged in the fixing groove 7, the two card slots 8 are opened on the side of the guide head 3 and are connected to the fixing groove 7, the cavity 9 is opened in the interior of the connecting head 6 and is between the two card slots 8, the two limit plates 10 are arranged in the cavity 9, the second spring 11 is arranged in the cavity 9 and is between the two limit plates 10, and the two clips 12 are installed on the sides of the two limit plates 10 and extend into the two card slots 8

[0037] When the connector 6 needs to be disconnected from the guide head 3, press the two clips 12 inside to move them out of the slots 8 and into the cavity 9. At the same time, the second spring 11 will be compressed by the two limit plates 10 to release the connection between the connector 6 and the guide head 3. Then, the connector 6 can be pulled out of the fixing slot 7. During installation, press the two clips 12 inside to make them enter the cavity 9 through the above operation, and then insert the end of the connector 6 into the fixing slot 7. Use the inner wall of the fixing slot 7 to squeeze the two clips 12, and then adjust the position of the connector 6 so that the two clips 12 are aligned with the two slots 8. Without the squeezing of the inner wall, the second spring 11 rebounds and drives the two clips 12 to be respectively clamped into the two slots 8, so that the connector 6 and the guide head 3 can be re-fixed. The fixing method adopts the card fixing method, which will not be lost, and the operation is simple and convenient for the staff to operate.

[0038] Figure 5 for Figure 2 Enlarged view of part B;

[0039] like Figure 5 As shown, the lower rod mechanism includes a lower rod 13, a receiving groove 14, a secondary rod 15, a threaded hole 16, a screw rod 17, an empty groove 18, a first bevel gear 19, a second bevel gear 20, and a knob 21;

[0040] The lower rod 13 is mounted at the center of the lower surface of the housing 1, the receiving groove 14 is opened at the lower end of the lower rod 13, the auxiliary rod 15 is slidably arranged in the receiving groove 14, the threaded hole 16 is opened at the upper end of the auxiliary rod 15, the screw 17 is arranged in the threaded hole 16, the empty groove 18 is opened inside the lower rod 13 and is directly above the receiving groove 14, the first bevel gear 19 is installed at the end of the screw 17 extending into the empty groove 18, the second bevel gear 20 is rotatably installed on the inner wall of the empty groove 18 and meshes with the first bevel gear 19, and the knob 21 is installed at the end of the second bevel gear 20 extending to the outside of the lower rod 13;

[0041] When adjusting the length of the lower rod, the rotating knob 21 drives the second bevel gear 20 to rotate, and drives the screw 17 to rotate through the first bevel gear 19. The rotating screw 17 drives the sub-rod 15 to move outside the storage groove 14, thereby increasing the length of the entire lower rod mechanism. The reversing knob 21 reverses the screw 17 through the above operation, driving the sub-rod 15 to move into the storage groove 14, thereby shortening the length of the lower rod mechanism. The length of the lower rod mechanism can be adjusted to adapt to different working environments, thereby increasing the practicality of the device.

[0042] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0044] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A pull rod connection structure of a vacuum circuit breaker, characterized in that: include: The main body mechanism is the main body of the device; The main body mechanism comprises a shell (1), an upper end of the shell (1) is provided with a cover (4), a guide head (3) is provided inside the shell (1) below the cover (4), the upper end of the guide head (3) passes through the cover (4) and is provided with a fixing groove (7), two card slots (8) communicating with the fixing groove (7) are provided on the side of the guide head (3) above the cover (4), a connector (6) is provided inside the fixing groove (7), a cavity (9) is provided inside the connector (6) between the two card slots (8), two limit plates (10) are provided inside the cavity (9), a second spring (11) is provided inside the cavity (9) between the two limit plates (10), and a card member (12) extending into the adjacent card slot (8) is installed at the center of the side of each second spring (11); The lower rod mechanism is used to be connected to the crank arm of the vacuum circuit breaker and can be extended and retracted.

2. The pull rod connection structure of a vacuum circuit breaker according to claim 1, characterized in that: A bushing (2) is provided inside the housing (1) below the cover (4), and a first spring (5) is provided inside the housing (1) below the guide head (3).

3. The pull rod connection structure of a vacuum circuit breaker according to claim 1, characterized in that: The lower rod mechanism comprises a lower rod (13) mounted at the center of the lower surface of the housing (1), and a receiving groove (14) is provided at the lower end of the lower rod (13).

4. The pull rod connection structure of a vacuum circuit breaker according to claim 3, characterized in that: A secondary rod (15) is slidably arranged in the receiving groove (14), a threaded hole (16) is provided at the upper end of the secondary rod (15), and a screw rod (17) is arranged in the threaded hole (16).

5. The pull rod connection structure of a vacuum circuit breaker according to claim 4, characterized in that: An empty slot (18) is provided inside the lower rod (13) just above the receiving slot (14); the upper end of the screw rod (17) extends into the empty slot (18) and is installed with a first bevel gear (19); a second bevel gear (20) is rotatably installed on the inner wall of the empty slot (18) and is engaged with the first bevel gear (19); the end of the second bevel gear (20) extends to the outside of the lower rod (13) and is installed with a knob (21).

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